Apparatus for making and filtering solutions, applicable in the extraction of metals from ores and for like purposes.



P. G. O. ISHERWOOD. APPARATUS FOR MAKING AND FILTERING SOLUTIONS APPLICABLE IN THE EXTRACTION 0F METALS FROM ORES AND FOR LIKE PURPOSES.

APPLICATION FILED JUNE 26, 1914. 1,1 1390, Patented Sept. 15,1914.

Inventor Witnesses- .dttornoy.

UN TE STATES PATEN ohm-on f PERCY CLAUDE. CAMERON ISHERWOQD, or nirsHEYHEAifi,ENGLAN APPARATUS FOR. MAKING AND FILTERING, soLUTIoNs, ArPLIcnBLE I II THE Ex'rR-Ac TIOIN' OF METALS FROM ORES AND FOR LIKE PURPOSES.

1,110,790. I Specification of LettersPatent Pgt t d pt 15 Applicationfile'dJune 26,1914. SerialNo. 847,501. i a

7 T all whom it may concern.- over the coarser particles. The internal Be it known that 1', PERCY CLAUDE OAM- pressure still maintained within the;- com- ERON IsnERwooD, Ph. D., a subject-of the partmentaids in thefiltration of the solu- King of Great Britain and Ireland; resid-.- tion through the charge and through. the I 5 ing at Moss Cottage-,.Bushey Heath, Hrts, filter; plate. It will be understood that the 0 England, have invented certain new and solution. accumulates in the space beneath useful. Impro'vementsin and Relating tovApthe filter, plate and dischar es. througha paratus for Makirig and Filtering Solutions, suitable outlet, which is un erthe control Applicable in the xtr-action of Metals from of a valve. On the solution being discharged 10 Ores and :for like Purposes, of which the the casing'is rotated, so that. the compartfollowing is a specification. a ment lies in: the lowermost position, The This invention relates to a filteringappadischarge manholes arethen opened-andthe ratus adapted for the extraction of ores and treated substance or ore is thendischarged."

similar substances under high temperature. The casing is then in the position which and pressure and the filtration of solutions the-empty. compartment lies lowermostand 1'70 which by containing s'limy substances, such a further quantity'of ore or the substance to as gelatinous silica or extremely fine ore parbe treated is then charged therein together ticles, makes filtration by ordinary means a. with the solutionnecess'ary for-the purpose difiicult operation. of extraction. The solution produced in The invention is of specialapplication for the next compartment is then withdrawn .75

the extraction of substances such as refracand the charge expelled, and so the operatoryzinc lead-ores and for the filtration of tlons'continue. v the solution of the dissolved compounds It will be understood that when the vessel from their slimy or finely divided residues. is rotated so as to bring it in a position for According to the invention I provide a the charge to be filtered the other ,compart- 80.

circular cylindrical casing adapted to ro-v ment which at 'first was in the uppermost tate, and provided, centrally with a partiposition is now in the lowermost position tion, by which twocompartments or two sets and therefore the time of'this filtration is of compartments are formed, within which utilizable for-emptying the residue, rechargseparate charges of the ores or other submg with fresh ore and solution and extractstances to be extracted are treated. l Vithin ing the said ore with the said solution under each of the compartments thus formed a conditions of high temperature and presfilter plate is mounted, so that thus a space sure. Thus both compartments are simulis formed at'each side of the central partitaneously utilized effecting economy in time 35 tion and beneath each filter plate. The and space. charge of ore or other substance to be treated The invention comprises the construction is introduced into one of the compartments which is hereinafter described of the casing, and for the purpose the cars I may provide for the admission of steam to ring is rotated so that this compartment is be efl ected into each compartment, while the M disposed lowermost. On the charging of easing isrotated or rotary reciprocation imthis compartment with the ore or the subparted to it, or I may provide that the steam stanceito'be treated and with the solution may, be admitted into each compartment necessary for the extraction of the soluble while the casing is held stationary and movecompounds steam under pressure is admit-; ment imparted to it only after the steam at ted by which thesolution is heated to ahigh, pipes have been disconnected. I may protemperature and during this operation the vide the respective compartments divided by casing maybe rotated or rotary reciprocadiametrical partitions, whereby a number tion may be imparted to it. On the compleof sets of compartments are formed with tion of the. extraction that compartment corresponding dischargemanholes and dis- 50 from which the solution isto be withdrawn charge outlets for the solutions produced. is brought into the uppermost position by The invention is illustrated in the accomthe rotation of the casing. By this means panyi-ng diagrammatic drawings which show the coarse particles of the charge in the a filter of circular section. uppermost compartment come to lie' upon Figure'l is a side view of the filter, Fig.

55 the filter plate and the finer particles lie 2 is a sectionon the line at, y of Fig. 1.

' cording to t e In carryin construction illustrated, in which the filter is of circular cross section, provide a longitudinal casing a' mounted upon a number of sets of rollers. b, so that .the weight of the casing and the charges con- I tained therein may be uniformly distributedand'carried upon the sets of rollers referred to. It is preferred to provide two rollers b b mounted between two slates b 'b pivotally carried upon a foun ation plate 0' so I that thus the weight of the casing is borne said rollers ma of position of pose a gear wheel a is mounted centrally on the casing, and motion is imparted thereto from any suitable source of motive power,

so that the-casmg may be rotated when required. Means may be provided for the ro- Y tary reciprocation of the apparatus to any extent that may be desired. either by gear deriving movement from a source of motive power .or by means of hand-operated gear. Similarly, hand-operated gear may be providedto rotate the same direction. A central partition f is provided to extend the whole length of the casing, and this is suitably supported at a number of points. the whole length of the casing on each side of the central partition and each of the filter plates provided is suitably supported. .The filter plate maybe provided as a perforated metal plate serving to support the filtering material, which may consist of a layer of gauze and fabric or felt. It will, however,

. be understood that the filter plate may be otherwise provided. In a position immediately opposite the filter plate a number the invention into effect acthe casing continuously 1I1 A filter plate 9 extends.

of discharge manholes h aremounted in line, the respective sets of manholes. for the two 1* compartments-being disposed in diametrically opposite positions. Elliptical char-g 'ing manholes j may be provided in the end plates at each end of the casing. An outlet connection 70 may be 'rovided in the length ofthc casing for withdrawing the solution from the spaces res ectively formed between the partition and t e filter plates. A steam pipe may, however, be rovided to receive the supply at each end 0 the casing for each compartment, and a central connection'may be mounted on the end plate at either or each end,'whereby,the admission of steam may be maintainedwhile the casing is rotated. It will, however, be understood that means may be provided for the ready disconnection of the steam supply pipes. .v

' What'I claim as my invention and desire to secure-by Letters Patent is 1. Apparatus for making and filtering solutions applicable in the extraction of metals from ores and for like purposes comprising a rotatable casing divided longitudinally by a partition int-o compartments, a filter plate for each of said compartments, afsolution discharge outlet on the inner side of'each of such plates, and manholes to each compartment on theouter side of such platev for charging and discharging the compartments, substantially asdescribed.

*2. Apparatus for making and filtering solutions applicable in the extraction of metals from ores and they like purposes, comprising a rotatable casing divided longitudinally by a partition into compartments, a filter plate within said compartments, discharge outlet on the inner side of said filtcr, plates respectively, substantially as described. l i

In testimony whereof I have hereunto signed my name to this specification in the presence of two subscribing witnesses.

PERCY CLAUDE CAMERON ISHERWOOD.

WVitnesses W. E. Rooms,

E. J. WORTH.

and a solution- 

